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    <title>Document</title>
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    div {
        border: 1px solid pink;
        padding: 25px 50px;
        background-color: lightpink;
    }
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    <h1>简写的内边距属性 - 2 个值</h1>
    <div>这个 div 元素的上、下内边距为 25 像素，左、右内边距为 50 像素。</div>
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